Microgoneplax, Castro, 2007

Castro, Peter, 2007, A reappraisal of the family Goneplacidae MacLeay, 1838 (Crustacea, Decapoda, Brachyura) and revision of the subfamily Goneplacinae, with the description of 10 new genera and 18 new species, Zoosystema 29 (4), pp. 609-774 : 725

KEY TO SPECIES OF MICROGONEPLAX N. GEN.

1. G1 with pointed tip, without denticles, conspicuously bent median portion thicker than tip with row of large denticles along inner and outer margins (see Fig. 41C ). G2 with two terminal spinules (see Fig. 41D ) .......................................... Microgoneplax caenis n. sp.

— G1 with pointed tip with denticles, median portion not bent. G2 with one terminal spicule or process ........................................................................................................ 2

2. G1 slender throughout its length, slightly sinuous, without broadened median portion ... 3

— G1 with broadened median portion, not sinuous ....................................................... 4

3. Male abdomen broad (see Chen 1998: fig. 14-6, as Ommatocarcinus elegans ) ................ .................................................................................................... Microgoneplax elegans

— Male abdomen slender (similar to abdomen of Microgoneplax caenis : see Fig. 41B ) ........ ............................................................................................. Microgoneplax prion n. sp.

4. G1 with straight distal part; broadened, paddle-like median portion (see Fig. 43B ) ....... .............................................................................................. Microgoneplax cope n. sp.

— G1 with conspicuously bent distal part bordered by sparse, large denticles (see Fig. 44B ) ............................................................................................ Microgoneplax pelecis n. sp.

Figures

FIG. 41. — Microgoneplax caenis n. sp., ♂ holotype, cl 4.2 mm, cw 7.1 mm, between Panglao and Pamilacan islands, Philippine Is, PANGLAO 2004, stn T27 (NMCR 27014):A, dorsal surface of the carapace; B, abdomen;C, right G1, ventral view; D, right G2,ventral view. Scale bars: A, 5 mm; B, 2 mm; C, D, 1 mm.

FIG. 43. — Microgoneplax cope n.sp., ♂ holotype,cl 4.4 mm,cw 8.4 mm,Futuna I., South Pacific,MUSORSTOM 7, stn DW 513 (MNHN-B 30063): A, dorsal surface of the carapace; B, left G1, ventral view; C, left G2, ventral view. Scale bars: A, 5 mm; B, C, 1 mm.

FIG. 44. — Microgoneplax pelecis n. sp.,♂ holotype,cl 3.9 mm,cw 6.7 mm,Kai Is, Indonesia,KARUBAR,stn DW 29 (MNHN-B 30065): A, dorsal surface of the carapace; B, left G1, ventral view; C, left G2, ventral view. Scale bars: A, 5 mm; B, C, 1 mm.